401246641 has 4 divisors (see below), whose sum is σ = 401287284. Its totient is φ = 401206000.

The previous prime is 401246633. The next prime is 401246653. The reversal of 401246641 is 146642104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 400600225 + 646416 = 20015^2 + 804^2 .

It is a cyclic number.

It is not a de Polignac number, because 401246641 - 2³ = 401246633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401240641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5031 + ... + 28771.

It is an arithmetic number, because the mean of its divisors is an integer number (100321821).

Almost surely, 2^401246641 is an apocalyptic number.

It is an amenable number.

401246641 is a deficient number, since it is larger than the sum of its proper divisors (40643).

401246641 is a wasteful number, since it uses less digits than its factorization.

401246641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40642.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 401246641 is about 20031.1417797389. The cubic root of 401246641 is about 737.5709500256.

Adding to 401246641 its reverse (146642104), we get a palindrome (547888745).

It can be divided in two parts, 4012 and 46641, that added together give a cube (50653 = 37³).

The spelling of 401246641 in words is "four hundred one million, two hundred forty-six thousand, six hundred forty-one".